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Complicated curved surface tracking method for welding nuclear power J-type joint

A complex curved surface and nuclear power technology, applied in welding equipment, arc welding equipment, electric controllers, etc., can solve the problems of high cost and complex equipment system, and achieve the effect of simple operation, wide adaptability, and good experimental reproducibility

Inactive Publication Date: 2007-06-06
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0003] Regarding the welding tracking of J-shaped joints, French POLYSOUDE Co., Ltd. (POLYSOUDE) has provided French Framatome Co., Ltd. (Framatome ANP) with special welding equipment for J-shaped joints. Video camera, arc length adjustment mechanism, swing mechanism and rotation mechanism realize tracking, but the equipment system is complicated, and the camera is installed to monitor and track the welding process, and its cost is expensive

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  • Complicated curved surface tracking method for welding nuclear power J-type joint

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Embodiment Construction

[0016] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following implementations example.

[0017] The complex curved surface is formed by intersecting the outer diameter of the pipe Φ=100mm and the inner radius R=1938mm of the spherical head. The angle between the pipe axis and the tangential direction of the spherical surface is 40-90°, and the shape and trajectory of the intersecting surface are different. Considering that the radius of the spherical surface is much larger than the outer diameter of the pipe, the local area can be approximated as the intersection pipe between the pipe and the inclined plate. As shown in Figure 1, the driving pipe seat is made of nickel-base...

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Abstract

The complicated curved surface tracking method for welding nuclear power J-type joint belongs to the field of metal welding technology. The method includes the following steps: detecting the welding power source voltage and current output signal and workpiece position zero point signal to set the double servo mechanism motion; comparing the tested arc voltage value and the set parameter to obtain the difference and obtaining the position difference to start the PID controller; setting the PID parameters by means of the double servo mechanism and the programmable controller to realize the fast response and complete the tracking to complicated curved surface for stable welding. The present invention has wide adaptability, and is simple, repeatable and suitable for different arc striking modes.

Description

technical field [0001] The invention relates to a complex curved surface tracking method for nuclear power J-shaped joint welding, which belongs to the technical field of metal welding. Background technique [0002] At present, the tracking of welding complex surfaces adopts methods such as robot teaching and visual sensing tracking. Due to the fluctuation of the trajectory caused by the multi-layer welding seam, the trajectory equation is difficult to describe. At the same time, the teaching or visual sensing process is complicated and takes a long time. processing time. These methods all have limitations in tracking the complex curved surface of nuclear power J-joint welding. The J-joint is a welded joint connecting the drive socket of the control rod drive mechanism with the nuclear reactor pressure vessel, and its welding quality is related to the safety of the nuclear reactor pressure vessel. There are a large number of control rod drive sockets. For a 600MW nuclear r...

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Application Information

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IPC IPC(8): B23K9/127B23K9/095B23K9/10G05B11/42
Inventor 陆皓张茂龙陈俊梅钱旭辉相睦徐政
Owner SHANGHAI JIAO TONG UNIV
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